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| VOLUME 120 (2024) | ISSUE 10 | PAGE 808 |
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Photonics of two-dimensional structures formed by cholesteric liquid crystals
P. V. Dolganov+*, K. D. Baklanova+*, V. K. Dolganov+, E. I. Kats×
+Osipyan Institute of Solid State Physics, Russian Academy of Sciences, 142432 Chernogolovka, Russia *National Research University Higher School of Economics, 101000 Moscow, Russia ×Landau Institute for Theoretical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Russia
Abstract
Chiral liquid crystal materials can self-organize into modulated structures with multilevel arrangement formed by curved cholesteric helixes and spatially ordered defects. We managed to prepare periodic two-dimensional cholesteric domains with remarkable structure and photonic properties. They are formed due to geometrical frustration. Complex optical patterns with non-trivial dependence of the images on light polarization and on observation geometry were found and investigated in transmission and reflection. The obtained photonic structures of two-dimensional ordered confocal domains and their optical properties are a challenge both for theory and experiment. |